/* eslint-disable no-extend-native */
export function arrayPolyfill() {
  if (!Array.prototype.includes) {
    Object.defineProperty(Array.prototype, 'includes', {
      value: function (searchElement, fromIndex) {
        // 1. Let O be ? ToObject(this value).
        if (this == null) {
          throw new TypeError('"this" is null or not defined')
        }

        let o = Object(this)

        // 2. Let len be ? ToLength(? Get(O, "length")).
        let len = o.length >>> 0

        // 3. If len is 0, return false.
        if (len === 0) {
          return false
        }

        // 4. Let n be ? ToInteger(fromIndex).
        //    (If fromIndex is undefined, this step produces the value 0.)
        let n = fromIndex | 0

        // 5. If n ≥ 0, then
        //  a. Let k be n.
        // 6. Else n < 0,
        //  a. Let k be len + n.
        //  b. If k < 0, let k be 0.
        let k = Math.max(n >= 0 ? n : len - Math.abs(n), 0)

        // 7. Repeat, while k < len
        while (k < len) {
          // a. Let elementK be the result of ? Get(O, ! ToString(k)).
          // b. If SameValueZero(searchElement, elementK) is true, return true.
          // c. Increase k by 1.
          // NOTE: === provides the correct "SameValueZero" comparison needed here.
          if (o[k] === searchElement) {
            return true
          }
          k++
        }

        // 8. Return false
        return false
      }
    })
  }
}
